I have a large swollen, soft tissue mass on and around my left collar bone. I noticed it around November last year, and it s become much larger since April of this year. It s painful, tender, and I have sharp shooting pains down my left arm all the way to my finger tips. I had a CT scan at the beginning of April (when it started getting worse). The ER doctor said it was a non-cancerous tumor/lipoma, and to follow up with my PCP and a neuro surgeon. The neuro surgeon referred me to an ENT surgeon, sent me for an MRI and nerve conduction survey. The ENT surgeon said he would remove the mass after I had the MRI. A week and a half later I had the MRI, went back to the ENT, who then said he did not see the need to remove it. I went back to my PCP because the mass conttinues to get larger and more painful. He referred me to another ENT surgeon for a second opinion. Last week I had the nerve test done, which confirmed that everything I am feeling is due to the mass on my neck, (which we had already determined), the next day I had a CT with contrast of my neck. Today, I had a thyroid ultra sound and a CT scan of my chest, also with contrast. Since these tests, the mass is even larger, even swollen down into my left breast area. I have an appointment with my ENT in a few days. Just wondering if anyone has any thoughts, or seen similar symptoms and what I can expect next.